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I am working with an array and need some help. I would like to create an array where the first field is a String type and the second field is an Integer type. For result:
Console out
a 1
b 2
c 3
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Arrays that contain instances of multiple types are often referred to as heterogenous arrays, and are incredibly commonly used in dynamically typed languages — like PHP, JavaScript, and Ruby.
Use a union type to define an array with multiple types in TypeScript, e.g. const arr: (string | number)[] = ['a', 1] . A union type is formed from two or more other types. The array in the example can only contain values of type string and number . Copied!
An array can only have a single type. You can create a new class like: Class Foo{ String f1; Integer f2; } Foo[] array=new Foo[10]; You might also be interested in using a map (it seems to me like you're trying to map strings to ids).
Types of arrays? There are two types of array: Two-dimensional array. Multi-dimensional array.
An array can only have a single type. You can create a new class like:
Class Foo{
String f1;
Integer f2;
}
Foo[] array=new Foo[10];
You might also be interested in using a map (it seems to me like you're trying to map strings to ids).
EDIT: You could also define your array of type Object but that's something i'd usually avoid.
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